Effect of PVAc dispersal into PVA-NH4SCN polymer electrolyte

Abstract

Abstract. The present paper deals with ion transport studies on a new proton conducting composite polymer electrolyte -(PVAx:NH4SCN)y:PVAc system. Complexation and morphology of the composite electrolyte films are discussed on the basis of X-ray diffraction and differential scanning calorimetry data. Coulometry and transient ionic current measurements revealed charge transport through protons. The maximum ion conductivity was found to be 7.4.10 -4 S.cm -1 for the composition: x = 0.15, y = 0.12. The observed conductivity behaviour is correlated to the morphology of the films. The temperature dependence of the electrical conductivity exhibits Arrhenius characteristics in two different temperature ranges separated by a plateau region related to morphological changes occurring in the electrolyte.

Dynamic Mechanical, DSC, and Electrical Investigations on Nano Al2O3Filled PVA:NH4SCN:DMSO Polymer Composite Dried Gel Electrolytes

“…When filler particles (Al 2 O 3 ) are dispersed to form a composite electrolyte, they show two Arrhenius regions separated by a nonlinear regime ( Figure 5). Similar behavior has been reported for blend-based composite polymer electrolytes [33,34]. In the low temperature regime (below 80 C), segmental motion of chain segments obstructs the easy motion of charge carriers as a polymer enters into the viscoelastic phase.…”

Structural, thermal and ion transport studies on nanocomposite polymer electrolyte-{(PEO + SiO2):NH4SCN} system

“…The temperature dependence of conductivity of SPEs show the Arrhenius type thermally activated process with two different activation energies, before and after the melting temperature. 10 3.5 [80 PEO+20 SiO 2 ] 95 :(NH 4 SCN) 5 7.5 [80 PEO+20 SiO 2 ] 90 :(NH 4 SCN) 10 1.8 …”

“…Such a dispersion of fillers was first suggested by Weston and Steele [9]. Since then, a number of inorganic or ceramic and organic additives have been reported [10][11][12][13]. Recently, few works have been reported on the synthesis and characterization of nanocomposite polymer system [14][15][16] where due to small particle size, the electrochemical, magnetic and optical behaviour have been shown to improve drastically [17].…”

Plasticized chitosan–PVA blend polymer electrolyte based proton battery

“…PVA is nontoxic, water soluble, biocompatible and biodegradable synthetic polymer, which is widely used in biomedical field [15]. PVA also has been studied as a polymer electrolyte [16]. Besides plasticization, the conductivity of a polymer electrolyte can be improved by blending two polymers as the host material for ionic conduction [17].…”